Saudi Arabia holds the title as the world's largest producer and exporter of total petroleum liquids, and the country's national corporation, Saudi Aramco retains the most proven reserves and production of hydrocarbons worldwide. Only behind Russia as the largest crude oil producer, Saudi Arabia has an estimated 267 billion barrels of proven oil reserves, including 2.5 billion in the Saudi-Kuwaiti Neutral Zone, and 253 trillion cubic feet (Tcf) of proven natural gas reserves. Impressively, more than half of Saudi Arabia's oil reserves are sourced from only eight fields.
Estimating falls under the broader heading of Cost Engineering but comes at the bidding stage of projects to provide an evaluation of the possible cost of a future contract. An Estimator or Estimating Engineer will review the cost of all elements of the project in order to establish the requirements for resources, funding, budget control and revenue generated.